In an experiment for the determination of the speed of sound in air...

In an experiment for the determination of the speed of sound in air using the resonance method, the length of the air column that resonates in the fundamental mode with a tuning fork is

0. 1m

. When this length is changed to

0. 35m

,& the same tuning fork resonates with the first overtone. The end correction is

Options

A $0. 012m$
B $0. 025m$
C $0. 05m$
D $0. 024m$

Correct answer

B. $0. 025m$

Step-by-step solution

$\dfrac{λ}{4} = e + {l}_{1}$

$\dfrac{3\lambda}{4} = e + {l}_{2}$

$e + {l}_{2} = 3e + 3{l}_{1}$

$e = \dfrac{l{}_{2} - 3l{}_{1}}{2} = \dfrac{\text{0.35} - \text{0.3}}{2} = \dfrac{0.05}{2} = \text{0.025 m}$

Practice Experimental Physics on Quantrex Academy →

More from Experimental Physics

Two thin wires, Wire-1 of diameter 0.650 mm and Wire-2 of unknown diameter d are given.… JEE Advanced 2026 In a Vernier calipers, when both jaws touch each other, zero of the Vernier scale is… JEE Main 2026 In a screw gauge when the circular scale is given five complete rotations it moves… JEE Main 2026 In a screw gauge the zero of main scale reference line coincides with the fifth division… JEE Main 2026 In an experiment, a set of reading are obtained as follows - 1.24 ~mm, 1.25 ~mm, 1.23 ~mm… JEE Main 2026 When both jaws of vernier callipers touch each other, zero mark of the vernier scale is… JEE Main 2026 In a vernier callipers, 50 vernier scale divisions are equal to 48 main scale divisions.… JEE Main 2026 In a screw gauge, the zero of the circular scale lies 3 divisions above the horizontal… JEE Main 2026 Full Experimental Physics list All NTA Abhyas JEE Main PYQs